Doc. 26/13Permissible Charge / Filling Conditions for Acetylene Cylinders, Bundles, Battery Vehicles

This document is intended to give the requirements for filling individual cylinders, bundles and battery vehicles containing different porous materials and different solvents. The document is intended to supplement the existing standards by clarification of their safety philosophy and the method of implementation. It demonstrates the effects of the essential parameters, such as maximum acetylene content, necessary solvent content, acetylene/solvent ratio, acetylene filling tolerance, solvent filling tolerance, free volume in the cylinder, porosity of filler material.
The permissible charge for acetylene cylinders was specified in different ways by various national regulations although in the course of generating International and European standards, experts have agreed upon a simple and appropriate safety concept. This safety concept supersedes the arbitrary free space and/or maximum pressure requirements in some older national regulations.
The document is intended for those involved in the specification, approval and filling of cylinders with acetylene.